Belt clamp device



March 26, 1935. J. R. HERRING 1,995,425

BELT CLAMP DEVICE Filed NOV. 50, 1954 2 Sheets-5h66?l l .2 M '2 y@ 0 Z J9 22 10 j mmn J. R. HERRING 1,995,425

BELT CLAMP DEVICE March 26, 1935.

Patented Mar. 26, 1935 I UNIT ED STATES V:oIf'Ficlaf g 'e 1,995,4 2'5 v BELT Y v.-James R. Herring, Chicago, Appliationnqvenitreo,1934;sri1Nb.75'5,396

This invention relates to improvements in belt V- each other tornake theg'belts endless;

clamps f of 'the `kind which are use-d for "drawing the? ends of power transmission Yorconvey'forbelts together. in the process 'of securing the Aends'ft'o The object of the Ainvention is to provide a device of the character mentioned especiallyv adapted foruse in connection with heavyv or wide power transmission or` conveyor belts, and-which can also beused for smaller-belts. .1

A feature of .importance is thefe'ase with which the devicercan be adjusted for usewith. beltsv ofv dierent widths. f f. i'-

Another valuable feature relates to the Yprovi- 1 sion of ai guide bar which can also .be use d/` for a tension bar to hold. the'ends of the bel-tinplace' for securing together when itis' desired, for some` reason, to temporarily remove the usual tension- -ing rods. `v` f 011 Conveyor Ybelts which carry relatively. :large buckets. Y

To the .accomplishment of the above andother objects and advantages, theinvention consists inv the means herein fullydisclosed and particularly. pointed out inthe appendedclaims, the accompanying drawings, forming part of thisspecica tion, and the following'description setting forth in detail one embodiment exemplifying the'invention, such disclosed arrangement of parts and devices, and combinations of parts-constituting, however, butone of various applications of the principle.

of theinvention. Y

In-s'a'id drawingsz--Y` i Y y f Fig.V l'ris 'a fragmentary'plan view showing my improved belt clamping device as it appears in use on a belt;v

Fig. 2 is a longitudinal section on the line 2-2 of Fig. 1; Y

' Fig. 3 is a transverse section on the line 3-3 of Fig. 1;

Figs. 4 and 5 are detail longitudinal sections on the lines 4 4, and 5-5, respectively, of Fig. 1h; g Fig. 6 is a detail longitudinal section on the line 6 6 of Fig. 1;

Fig. '7 is a section similar to Fig. 3, but illustrating the use of the hooks on the yokes;

Fig. 8 is a fragmentary, Vhorizontal section on the line 8-.8 oi Fig. 5'; and

Fig. 9 is a view similar to Fig. 3, but illustrating, in an Vexaggerated manner, the shape of the clamping bars. I Y Y A belt 10 is illustrated, in the drawings, having ends 11 and 12 which it is desired to draw together "A further feature of importanceirelatesf to a" construction which adapts-'the devicelffor use fortheipurposeofsecuring the 'ends to each other` to ,makey the .belt endless. Usually the fbelt is in place .faroundthe pulleyslon .which the belt Operev ate's and' it requires .consideraoleflforce to draw the ends together ,especiallywhen the-belt is, quite Wide.;or,is.a heavy conveyor belt-,such as thisy pres-l ent deviceisparticularly.devisedfor. Then-device V.consists ofjtwo similar lpairs ofclampslyoneadapted for..useaon.each end of they beltgandte'nsion rods for V`drawingthe jclamps 13' 10` toward each other.` Y

Azdescription otrone .pair ofv the clamps will suflice orboth; f g;

YEach pair of clamps,;asshown consists of an upper clampingbar :14; fa lowerclampingv bar 15,A and a pair of clamping yokes V16A-'17. l -xTherjbars v14 vand15 are preferably made jof metal andas shown are hollow for lightness. The opposed edges ofthe bars are Veachproyided with y a .series-ofhalfround openings `lwhch together 20.` provideopenings ,.betweenfthe" Abars f orf receiving, y tensionrods or bolts 19..v The end'portions 200i" the;` tension rods are screw-threaded, right-hand on one end. andleftfhand oni the other ends and suitable threaded co`operating square nuts 21, are` provided, for receiving the'endsof the rods. vThe nuts 21 are positioned on the outer sides of the two pairs of.clamping bars' forpulling the ends of the belts together.; g.. f; Y. Y f i mThe, yokes .16-1'7 are positioned on the bars 14 and .15.closeftogthe; nuts 2 1, and the sides of the yokes contact with the adjacent sides ofthe nuts 21 to prevent them rotating when the rods y19, are rotated to draw the pairs of clamping bars tcwardfeach `other; .Each rod- 19, is pro-Ay vided with ra polygonally shapedmiddle portion 22 to which va wrench can be applied forrotating the same. The yokes 16-17, are duplicatesand each con-V sists ofV an' open'frame 23,'through whichithe 40 clamping bars 14 and 15 freely pass. Thegframe 23 consists of a bottom 24, sidefbars` 25, each having La central slot 26, and a top 27. A clamp` ing screw 28, is'threaded through thev top and its point is engaged with a clamping plater 29 which has projections 30 guided in the slots 26.

YPreferably the point 315 of vthe screw 28 is ball- Cil , Separating; ,n

ably slightly curved lengthwise so thatV when they are clamped on a belt they will first contact with and bind the middle portion thereof, and then as the ends ofthe bars are forced toward each other, the binding eifect will spread toward the Vedges of the belt until the belt is rmly and tightly clamped between the bars 14 and 15 for the entire width of the belt.

In using the device it is preferable to arrange the tension rods 19A asfnear the side edges of Vthe belt as the holes'.`18will permitandlarrange the yokes 16-17, as close to the rods as the nuts 2 will permit.

It sometimes occurs that the belt uponwhich the device is used is a'conveyor belt, carrying buckets,k which prevent the location?of;'-lilregn-f4 sion rods 19 between the bars 14T-.15

the, plane Of the belt. I

To meet this situation, each yoke proyided tends stip' fthe 'clamping bars andi: thus .distort the belt out of itsftrue `iiat condition.

' To ypreventthisY action, :11 providefa:hat extendingY through suitable guidefopeningsf inthe two lower lclamping bars 15;: The'atibar i 35 Yis provided-.in ea'chend' portionfwithla series Ofholes 37.

11n y using this bar, ritl isentered 'through-"the guide openings 36 'inlthedtwoV lower clamping. bars 15, fanagitis preferably secured@ o'nesbar by af'screw, carried bythe brl15 land its point` entered through one' of the holes .31. "Thefs'other' bar' $15, also varries "a similar `Escrew,Y but usually this`v second s'z'leWAis'frlottightened,--thell'if'bar 35v sliding freely" throughlthe second barfl-15 as the belt ends arcidrawn"'tc'ngether;fifaJ sprung dont 'of position fwhenfthe*h'ookedf 'ends on the yokes are used. This otherzfunctionis toactas a thirdlor auxiliary-tensionbarat any gether and at thesar'n'e tii'n'e'r remove theten-L s'ofrods z At'such times-both'thescrews lis-Fare fentered into'holes-SI in thebar 35,"andthentherods 19 can be removed-'without thefends of the'belt The adjustability of the yokes along the clamping bars, the hooked lower ends on the yokes, the iiat guide bar 35, used also as atension bar, and the curved form of the clamping bars, are all points of value in this invention.

As many modifications ofthe invention will readily suggest themselves to one skilled in the art, I do not limit or confine the invention to the specific details of construction `herein shown and ',descx'ibed,` except Within thescope of the appended claims.

I claim:

'l-LQIn a'deviee of the kind described, a belt clarnpl comprising an upper and a lower clampingbarQclampingyokes for forcing the bars to- .Sward eachother, the opposed faces of the bars provided with registering openings for receiving tension rods; `Vand-said yokes being adjustable Elongiijruclkinzpflly of the bars as and for thepurpose specified.

I2; Theinvention as defined in claim l. theopposed-'ffaces of the barsbeing curved slightly lon- Y gitudinally sothat whenclampedon a belt, they will-.frst'bind the .middle portion thereof, f-

3. A@belt clampingdevicel o the kind described, which includesa 'pair of rpclampsas,defined in claim 'ily- ;4 andgftension, `roda adapted to be positioned thempeningsof said'bars at eachv side of-sa beltzbeing clamped, Vthe-rods.bei1ig- .-3c1e\iv threaded right-hand at oneend, and left-hand at the otherend, and co-operating nuts for the rods:adaptedA to be positioned incontact Withthe respective yokes to prevent the nuts turning whentherods are turned. f

srt-Inca belt clamp, a. 'pairgof clamping. de-

vices -eachacomprising vanguppery andlower bar, Y

clamping .yokes adjustable along the bars, the yokesgpoided on theirlower ends Vwith lateral projections, provided with openings forv receivingtensionrods for drawing the clamping devicestoward each other.` y

f.-;5.'-.Theirvention as;Y dened claim 4, and a guide bar adapted to be arranged projecting through'openings provided in the lower clamping ba'rs,-.asand furthe' purpose specified. v-Hrowlever, the blairV 352 hasf "another function-f, besides thatof 'keeping the."clampslfrombeingg ,-,.6:.21n.fadevice fordrawingthe ends of a belt together, and-'comprisingga pair of clamping devices, each consisting of an upper bar and a1lower barfand a'pair of clamping yokes, one foreach-end thereof, tension rods .adaptedto engage theafsimilar ends of the clamping devices for drawing4 .themmtogethen and Va guide bar` adaptedto; be projected 'through' openings provided in' the lower bars of saidrdevices, and

means for securing the guidebar to both saiddevicesto permit .the removal of; saidtension rods.

VJAMESR HERRING.- 

